/*	$NetBSD: main.c,v 1.34 2022/06/27 18:48:49 christos Exp $	*/

/*
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
 The Regents of the University of California.  All rights reserved.");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: main.c,v 1.34 2022/06/27 18:48:49 christos Exp $");
#endif
#endif /* not lint */

#include <ctype.h>
#include <curses.h>
#include <string.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "robots.h"

extern const char *Scorefile;
extern int Max_per_uid;

static bool another(void);

int
main(int argc, char **argv)
{
	const char *word;
	bool show_only;
	int score_wfd; /* high score writable file descriptor */
	int score_err = 0; /* hold errno from score file open */
	int maximum = 0;
	int ch, i;

	score_wfd = open(Scorefile, O_RDWR);
	if (score_wfd < 0)
		score_err = errno;
	else if (score_wfd < 3)
		exit(1);

	/* Revoke setgid privileges */
	setgid(getgid());

	show_only = false;
	Num_games = 1;

	while ((ch = getopt(argc, argv, "Aajnrst")) != -1) {
		switch (ch) {
		    case 'A':
			Auto_bot = true;
			break;
		    case 'a':
			Start_level = 4;
			break;
		    case 'j':
			Jump = true;
			break;
		    case 'n':
			Num_games++;
			break;
		    case 'r':
			Real_time = true;
			break;
		    case 's':
			show_only = true;
			break;
		    case 't':
			Teleport = true;
			break;
		    default:
			errx(1,
			    "Usage: robots [-Aajnrst] [maximum] [scorefile]");
			break;
		}
	}

	for (i = optind; i < argc; i++) {
		word = argv[i];
		if (isdigit((unsigned char)word[0])) {
			maximum = atoi(word);
		} else {
			Scorefile = word;
			Max_per_uid = maximum;
			if (score_wfd >= 0)
				close(score_wfd);
			score_wfd = open(Scorefile, O_RDWR);
			if (score_wfd < 0)
				score_err = errno;
#ifdef FANCY
			word = strrchr(Scorefile, '/');
			if (word == NULL)
				word = Scorefile;
			if (strcmp(word, "pattern_roll") == 0)
				Pattern_roll = true;
			else if (strcmp(word, "stand_still") == 0)
				Stand_still = true;
			if (Pattern_roll || Stand_still)
				Teleport = true;
#endif
		}
	}

	if (show_only) {
		show_score();
		exit(0);
		/* NOTREACHED */
	}

	if (score_wfd < 0) {
		errno = score_err;
		warn("%s", Scorefile);
		warnx("High scores will not be recorded!");
		sleep(2);
	}

	if (!initscr())
		errx(0, "couldn't initialize screen");
	signal(SIGINT, quit);
	cbreak();
	noecho();
	nonl();
	if (LINES != Y_SIZE || COLS != X_SIZE) {
		if (LINES < Y_SIZE || COLS < X_SIZE) {
			endwin();
			printf("Need at least a %dx%d screen\n",
			    Y_SIZE, X_SIZE);
			exit(1);
		}
		delwin(stdscr);
		stdscr = newwin(Y_SIZE, X_SIZE, 0, 0);
	}

	if (Real_time)
		signal(SIGALRM, move_robots);
	do {
		while (Num_games--) {
			init_field();
			for (Level = Start_level; !Dead; Level++) {
				make_level();
				play_level();
				if (Auto_bot)
					sleep(1);
			}
			move(My_pos.y, My_pos.x);
			printw("AARRrrgghhhh....");
			refresh();
			if (Auto_bot)
				sleep(1);
			score(score_wfd);
			if (Auto_bot)
				sleep(1);
			refresh();
		}
		Num_games = 1;
	} while (!Auto_bot && another());
	quit(0);
	/* NOTREACHED */
	return(0);
}

/*
 * quit:
 *	Leave the program elegantly.
 */
void
quit(int dummy __unused)
{
	endwin();
	exit(0);
	/* NOTREACHED */
}

/*
 * another:
 *	See if another game is desired
 */
static bool
another(void)
{
	int y;

#ifdef FANCY
	if ((Stand_still || Pattern_roll) && !Newscore)
		return true;
#endif

	if (query("Another game?")) {
		if (Full_clear) {
			for (y = 1; y <= Num_scores; y++) {
				move(y, 1);
				clrtoeol();
			}
			refresh();
		}
		return true;
	}
	return false;
}